As a component used to realize the on-off and flow control of the pipeline system, the high-temperature ball valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. The high-temperature ball valve developed by New lotoke adopts a frictionless eccentric metal-to-metal seal design. The ball and sealing ring are specially hardened and are made of patented high-temperature alloy materials. They are suitable for high temperature, high pressure, corrosion resistance and contain solid particles, slurry, fiber, etc. Quick cut off of various fluids of impurities. The temperature resistance is 850 degrees, zero leakage, and the pressure resistance is 42MPa. It is widely used in aerospace and military industry and scientific research institutes such as the Chinese Academy of Sciences.